Rams-mad Keiran Lee plays football for Vinnie Jones' Hollywood All-Stars, has billboards on Sunset Boulevard, was interviewed on The Jerry Springer Show and is the only man in the world with his penis insured for a million dollars.

But there is only one place the former Derby rail worker – who earns a dream salary in LA as one of America's biggest porn stars truly loves to be – Pride Park Stadium.

"My heart belongs in Derby," says the 32-year-old, who grew up in Littleover, started watching the Rams at the age of six and is always planning his next trip home.

"It's where I grew up and learnt my values. It's where my friends and family are. I've just been back for three weeks but I've completely re-organised my May diary around the play-offs. I schedule my whole life around the Rams."

Keiran Lee at Pride Park with his son, also pictured in Rams gear.

Our transatlantic chat occurred at 8.30am LA time, just after he'd watched Derby County draw 1-1 with Brighton on his 60 inch bedroom TV with surround sound.

"My wife wanted a TV in the bedroom but I think she regrets it now," he laughed. "The match started at 5am LA time and I woke up my son when we scored!"

Likeable Keiran – real name Adam Diksa – is a former St Benedict School pupil who has succeeded in life but there isn't a boastful bone in his body.

"They follow me on Twitter," he laughed. "Quite a few of the players do including George Thorne, Jake Buxton and Jeff Hendrick. Freddie Flintoff, Robbie Savage and Sheffield Wednesday footballer Keiran Lee follow me too. He wishes I'd never chosen that name!"

They are not the only ones who follow him. Keiran has 161,000 fans on Twitter.

"That's nothing compared to my wife Kate," he shrugs. "She has more than half a million."

Kate, otherwise known as Kirsten Price, 34, is another star of America's adult movie industry, though now retired as an actress and caring for Keiran and their 19-month-old son.

Keiran can't stop talking about him – or Kate. "She's an amazing mum – and beautiful. She understands my love affair with Derby. The first Rams game I took her to was Forest away! We met at the Vic to start drinking at 7.30am and she thought it was great. She's a girl's girl but she can drink with the lads.

"I knew Kate was the girl for me after I broke my jaw in two places playing for the Hollywood All-Stars. I was in intensive care and, though we hadn't been together long, she came to hospital every day."

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It was sensible American-born Kate, from Boston, who three months prior to his football injury, talked him into taking out medical insurance, which currently costs the family $1,300 a month.

"If I hadn't, the medical bill would have been $286,000 dollars," says Keiran.

It's a sobering thought. Now Keiran is a family man and doting dad there is no way he wouldn't protect his family.

"My little one is just non-stop. He's like Dennis the Menace. He's got no fear. He's already flown around the world a lot and it was easy when he was a baby but now he's walking it's hard!"

When they're not jetting over to see a Rams game, the family home is in Calabasas, Fernando Valley, California.

"It's where Kim Kardashian and Kanye West live," says Keiran. "It's also where the porn industry is based."

So how did the humble lad who went to St Andrew's Nursery and St George's Catholic Voluntary Academy in Littleover, end up in LA in a career as far removed from Derby's rail or Royces norm as you can get?

A model from the adult film industry with a Derby County shirt.

"I stayed on at sixth form but ended up getting a job in the rail industry as a project manager. I was 18, happy and earning a decent salary for my age but I started thinking, 'is this it?'

"Then I went on holiday with the lads, got a bit tipsy and some naked pictures of me ended up online. It was all just a joke but I suddenly got an email from a company in Loughborough asking me to shoot porn. I was young, the hormones were raging and they offered me £200 so I said yes. The guy who owned the company said 'you're really good' and offered me more work,

"I was leading a double life, working the 9-5 then going off to shoot scenes. I started earning an extra £2,000 a month. I thought, 'this is great, no-one will ever know and I'm earning extra money'. I was 18, having sex with beautiful women and getting loads of cash for it.

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"The company got bigger and offered me a contract. At that time nobody knew, not even my best friends. I went full time and the company also had a clothing line so I told people I was selling shoes. It wasn't that I was ashamed. I just didn't know how people would react.

"I was living in an apartment in Melton Court, off Ashbourne Road in Derby, and one of my friends found a DVD. I said 'don't tell anyone' but everyone soon knew.

"I used to watch Derby home and away and went to a pub called the Blue Pool. One guy said, 'You've got some balls, lad'.

Former Derby County hard man Robbie Savage follows Keiran on Twitter.

"I was earning great money but thought, 'how do I tell my mum?' Eventually it came out, Someone told her. I used to go to her house for dinner – my parents are divorced – and she said, 'have you got something to tell me?' I think she was slightly disappointed at first but she has been unbelievable. She tells people I'm an erotic model.

"I said to her, 'I'm earning great money, not drinking, not doing drugs and I'm healthy'.

"In America this industry is a huge, well-run business and has very strict health rules. We are all tested every 10 days and there is a database where you can check the medical history of anyone you perform with.

"I stayed with the Loughborough company for three or four years but other companies started to approach me so I went freelance. That was really the beginning. It just went crazy. I was going all over the UK and Europe filming more than 40 scenes a month.

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"I met lots of people in the industry and was then invited to a wedding in America. I went over for two weeks and was persuaded to shoot some scenes for a company caller Brazzers while I was there. When I got home, I had an email from Brazzers offering me a contract.

"I went to America when I was 23. It was a real struggle to get a visa and I ended up stuck in LA for one-and-a-half years waiting for it to be sorted out. That was the worst time for me. I missed home. I grew up with a great group of people who are now brickies, joiners, electricians.

"My friends keep me grounded. Most of them I know through football. I played centre mid for Littleover Dazzlers and Mickleover Sports. I also represented Derby. I used to play with Lee Camp and I'm still good friends with Campy."

Being 'stuck' in LA made Keiran realise it's far from the dream place we may imagine.

"Sunset Boulevard is no different to walking down Normanton Road. And it's really hard to make good friends here. It's all about 'what can I do for you?' I miss the realness of Derby.

"No one has any manners either. When you give way to someone in your car, they never acknowledge you. My wife says, 'just let it go'.

Views on LA life aside, the offers being put on the table were too good for Keiran (a stage name he chose because he liked it, plus his middle name is Lee) to ignore.

"Another company came in offering me 20 scenes a month at $1,500 a scene with perks like private jets. But I have always been a loyal person. I told Brazzers I'd stay with them. Then they matched the offer. They are a fantastic firm to work for. They look after you, pay you well and send you great gifts at Christmas, not just for you. They think of Kate and might send her a Tiffany necklace. And when our son was born they sent a gift basket and gift card with $5,000 for him."

Nevertheless, at his lowest ebb, while waiting for that pesky visa, Keiran decided to throw in the towel and head home.

"But they talked me out of it and, soon, my visa arrived."

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He soared to success. He is now the number one male artist at Brazzers, a huge company which dominates the adult movie industry. He has won an adult movie producer award, a fans' favourite male performer award, is a star judge on American TV show The Sex Factor, a $1m reality porn competition, and he now directs as well as acts.

"I wanted to direct and kept asking Brazzers if I could but they said no – so I funded a shoot myself. It cost $25,000 dollars. It was a gamble.

"I made the scene, sent it to Brazzers and they liked it. It made them lots of money and now I direct 17 to 20 scenes a month and act in 15 to 20."

He works hard but Keiran is master of his own diary and can scheme in time off – and play-off finals.

"If I am directing it's a long day, but a scene may only take four or five hours."

He can also work things round Rams fixtures and will stop shoots to listen to match commentary – or has it playing in the background.

This Derby lad understands what's important in life.

"Since my little boy has come along, things have changed a lot. I have regular weeks off now and we might pop over to Disneyland. Later today we're going to Malibu beach."

But the craving for football, Sunday roasts and full English breakfasts doesn't evaporate in the Californian sunshine – quite the opposite.

Vinnie Jones on the red carpet at a film premiere. Keiran plays for his Hollywood All-Stars. (Image: PA)

"I've become good friends with Vinnie Jones thanks to the Hollywood All-Stars and people like Ricky Whittle of Hollyoaks and Strictly fame. Guy Ritchie has played for the team, too, and famous people come to watch.

"We have barbecues and Sunday roasts together. Ricky's a big Man Utd fan and we'll get together for morning fry-ups to watch matches (LA is eight hours behind UK time). We go to the King's Head pub in Santa Monica too. It's a bit different from the Blue Pool!"

Keiran is often recognised, particularly in the US where selfies and autographs are requested.

"It still feels weird. A lot of fans send me gifts like iPads or headphones, but I don't let it go to my head."

Instead, he's more likely to call his best mate, a Derby bricklayer, for some down-to-earth banter. We speak every day. I'm godfather to his little boy and our wives are great friends."

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As for separating life from work he keeps it simple: "Keiran is on set and Adam comes home."

But home is changing. After nine years in LA renting a beautiful but expensive home, Derby is calling.

"We're buying a house near Derby. I'd like my boy to go to Repton. I'll still work for Brazzers but we'll shoot in the UK and fly people in. Locations are cheaper over here."

Mainstream acting may come his way too. "Quite a few people have moved from the porn industry to mainstream and, knowing Vinnie, that may be a possibility. I've also spoken to people about the possibility of doing a UK reality show."

The opportunities are endless. But, more important than all that, his return to the UK means Rams games and quality Sunday roasts are guaranteed.

"Last time I was here I had the best Sunday roast ever at The Boot in Repton."

Best at a restaurant that is. He's looking forward to plenty of home-cooked ones with mum Zena Hudson in Allestree. Adam's coming home.